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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    BROUKOID
    BROUKOID --- ---
    +1
    JAKKILLER: az v periheliu prece :)
    VIRGO
    VIRGO --- ---
    +1
    https://www.nasa.gov/feature/goddard/2017/nasa-telescope-studies-quirky-comet-45p

    When comet 45P zipped past Earth early in 2017, researchers observing from NASA’s Infrared Telescope Facility, or IRTF,
    in Hawai’i gave the long-time trekker a thorough astronomical checkup. The results help fill in crucial details about ices
    in Jupiter-family comets and reveal that quirky 45P doesn’t quite match any comet studied so far.

    Like a doctor recording vital signs, the team measured the levels of nine gases released from the icy nucleus into the comet’s
    thin atmosphere, or coma. Several of these gases supply building blocks for amino acids, sugars and other biologically relevant
    molecules. Of particular interest were carbon monoxide and methane, which are so hard to detect in Jupiter-family comets that
    they’ve only been studied a few times before.

    VIRGO
    VIRGO --- ---
    +1
    Astronomers Reveal Nearby Stars That Are Among The Oldest In Our Galaxy - News Hub -
    http://news.gsu.edu/2017/11/19/astronomers-reveal-nearby-stars-among-oldest-galaxy/

    Astronomers have discovered some of the oldest stars in our Milky Way galaxy by determining their locations and velocities, according to a study led by scientists at
    Georgia State University. This study focused on old or “senior citizen” stars, also known as cool subdwarfs, that are much older and cooler in temperature than the sun.

    In this study, published in the November 2017 edition of The Astronomical Journal, astronomers conducted a census of our solar neighborhood to identify how many young,
    adult and old stars are present. They targeted stars out to a distance of 200 light years, which is relatively nearby considering the galaxy is more than 100,000 light
    years across. A light year is how far light can travel in one year. This is farther than the traditional horizon for the region of space that is referred to as “the
    solar neighborhood,” which is about 80 light years in radius.
    VIRGO
    VIRGO --- ---
    Press Release - Uncovering the Origins of Galaxies' Halos
    https://www.naoj.org/Pressrelease/2017/08/02/index.html

    Using the Subaru Telescope atop Maunakea, researchers have identified 11 dwarf galaxies and two star-containing halos
    in the outer region of a large spiral galaxy 25 million light-years away from Earth. The findings, published in The
    Astrophysical Journal, provide new insight into how these 'tidal stellar streams' form around galaxies.

    Researchers from Tohoku University and colleagues used an ultra-wide field of view camera on the Subaru Telescope to
    develop a better understanding of stellar halos. These ring-shaped collections of stars orbit large galaxies and can
    often originate from smaller dwarf galaxies nearby.

    The team focused their attention on Galaxy NGC 4631, otherwise known as the Whale Galaxy because of its shape. They
    identified 11 dwarf galaxies in its outer region, some of which were already known. Dwarf galaxies are not easily
    detected because of their small sizes, masses and low brightness. The team also found two tidal stellar streams orbiting
    the galaxy: one, called Stream SE, is located in front of it and the other, called Stream NW, is nestled behind it.

    VIRGO
    VIRGO --- ---
    Kepler Planets Tend to Have Siblings of the Same Size
    http://aasnova.org/2017/11/20/kepler-planets-tend-to-have-siblings-of-the-same-size/

    After 8.5 years of observations with the Kepler space observatory, we’ve discovered a large number of close-in, tightly-spaced, multiple-
    planet systems orbiting distant stars. In the process, we’ve learned a lot about the properties about these systems — and discovered some
    unexpected behavior. A new study explores one of the properties that has surprised us: planets of the same size tend to live together.

    VIRGO
    VIRGO --- ---
    VIRGO: HST is looking at the interstellar Asteroid A-2017-U1 with Wide Field Camera 3.

    SpaceTelescopeLive
    http://spacetelescopelive.org/2017-11-21T03:17:00+00:00
    JAKKILLER
    JAKKILLER --- ---
    1 odpověď+1
    BROUKOID: uz zpomaluje?
    BROUKOID
    BROUKOID --- ---
    1 odpověď+2
    VIRGO: ok... nejdriv sem to nechtel postovat, ale ted uz mi to neda - bud je to hodne sofistikovanej prank, nebo je to fakt uzasna nahoda :)
    VIRGO
    VIRGO --- ---
    VIRGO:

    Animation of `Oumuamua passing through the Solar System (annotated)
    https://www.youtube.com/watch?v=O6PpbO7vIjU
    VIRGO
    VIRGO --- ---
    +2
    https://www.nasa.gov/...ard/2017/nasa-s-james-webb-space-telescope-completes-final-cryogenic-testing

    The vault-like, 40-foot diameter, 40-ton door of Chamber A at NASA’s Johnson Space Center in Houston was unsealed on November 18,
    signaling the end of cryogenic testing for NASA’s James Webb Space Telescope.

    “After 15 years of planning, chamber refurbishment, hundreds of hours of risk-reduction testing, the dedication of more than 100
    individuals through more than 90 days of testing, and surviving Hurricane Harvey, the OTIS cryogenic test has been an outstanding
    success,” said Bill Ochs, project manager for the James Webb Space Telescope at NASA’s Goddard Space Flight Center in Greenbelt,
    Maryland. “The completion of the test is one of the most significant steps in the march to launching Webb.”

    These tests included an important alignment check of Webb’s 18 primary mirror segments, to make sure all of the gold-plated,
    hexagonal segments acted like a single, monolithic mirror.

    VIRGO
    VIRGO --- ---
    +4
    Breakthrough Prize Foundation studying privately-funded Enceladus mission - SpaceNews.com
    http://spacenews.com/breakthrough-prize-foundation-studying-privately-funded-enceladus-mission/

    The Breakthrough Prize Foundation, the organization funded by Russian billionaire Yuri Milner, is examining the feasibility of a private mission to a moon of Saturn.

    The effort, still in its early study phases, could eventually lead to a mission to the moon Enceladus. That icy moon likely has an ocean of liquid water underneath
    its surface, based in part on plumes emanating from its surface as seen by NASA’s Cassini mission. That has raised its prospects as a potentially habitable world.

    Milner first revealed his foundation was considering such a mission during an on-stage interview at a conference in Seattle Nov. 9 organized by The Economist magazine.
    “We formed a little workshop around this idea,” he said. “Can we design a low-cost privately-funded mission to Enceladus, which can be launched relatively soon and
    that can look more thoroughly at those plumes to try to see what’s going on there?”

    VIRGO
    VIRGO --- ---
    3 odpovědi+10
    Woow!

    https://www.nasa.gov/feature/solar-system-s-first-interstellar-visitor-dazzles-scientists

    new data reveal the interstellar interloper to be a rocky, cigar-shaped object with a somewhat reddish hue.
    The asteroid, named ‘Oumuamua by its discoverers, is up to one-quarter mile (400 meters) long and highly-
    elongated—perhaps 10 times as long as it is wide. That aspect ratio is greater than that of any asteroid or
    comet observed in our solar system to date. While its elongated shape is quite surprising, and unlike
    asteroids seen in our solar system, it may provide new clues into how other solar systems formed.

    VIRGO
    VIRGO --- ---
    ČT24 za 20 minut! HPC - Ed Kolb

    Hyde Park Civilizace — Česká televize
    http://www.ceskatelevize.cz/porady/10441294653-hyde-park-civilizace/
    VIRGO
    VIRGO --- ---
    We just sent a message to try to talk to aliens on another world | New Scientist
    https://www.newscientist.com/...61-we-just-sent-a-message-to-try-to-talk-to-aliens-on-another-world/

    Are you there, aliens? It’s us, Earth. Astronomers have sent a radio message to a neighbouring star system – one of the closest
    known to contain a potentially habitable planet – and it’s nearby enough that we could receive a reply in less than 25 years.

    “I think that’s an unlikely outcome, but it would be a welcome outcome,” said Douglas Vakoch, president of Messaging Extraterrestrial
    Intelligence (METI) International. METI is an offshoot of the more familiar SETI – the Search for Extra-Terrestrial Intelligence.

    The target star is GJ 273, also known as Luyten’s star, a red dwarf in the northern constellation of Canis Minor, just 12 light years
    away. In March of this year it was discovered to have two planets. One of them, known as GJ 273b, orbits within the star’s “habitable
    zone” and could potentially harbor liquid water, and perhaps life.

    Astronomers are trying to send a message to aliens
    https://www.youtube.com/watch?v=5bbjbuCdTA4
    VIRGO
    VIRGO --- ---
    https://www.nao.ac.jp/en/news/science/2017/20171117-nro.html

    Using more than half a century of observations, Japanese astronomers have discovered that the microwaves coming from the Sun at
    the minimums of the past five solar cycles have been the same each time, despite large differences in the maximums of the cycles.

    In Japan, continuous four-frequency solar microwave observations (1, 2, 3.75 and 9.4 GHz) began in 1957 at the Toyokawa Branch of
    the Research Institute of Atmospherics, Nagoya University. In 1994 the telescopes were relocated to NAOJ Nobeyama Campus, where
    they have continued observations up to the present.





    https://www.nasa.gov/feature/goddard/2017/nasa-detects-solar-flare-pulses-at-sun-and-earth

    By using multiple observatories, two recent studies show how solar flares exhibit pulses or oscillations
    in the amount of energy being sent out. Such research provides new insights on the origins of these massive
    solar flares as well as the space weather they produce, which is key information as humans and robotic
    missions venture out into the solar system, farther and farther from home.

    VIRGO
    VIRGO --- ---
    Hurá!!
    http://www.nature.com/news/arecibo-telescope-wins-reprieve-from-us-government-1.22994

    Nearly two months after Hurricane Maria devastated Puerto Rico, the people who operate one of the world’s pre-eminent radio telescopes —
    at the Arecibo Observatory, on the northwestern part of the island — are still without reliable water, electricity, and phone service at
    their homes. But their jobs appear to be safe.

    The US National Science Foundation (NSF), which funds about two-thirds of the observatory’s annual US$12-million budget, has decided to
    continue operating it in collaboration with as-yet-to-be-decided partners. Over the next five years the agency will reduce its annual
    contribution from $8.2 million to $2 million, with the rest coming from the unspecified partner institutions.

    “I'm so happy they made the right decision,” says Edgard Rivera-Valentín, a planetary scientist who works jointly at the observatory
    and the Lunar and Planetary Institute in Houston, Texas. “I’m so happy the observatory stays alive.”

    VIRGO
    VIRGO --- ---
    +2
    Next Generation Astronomical Survey to Map the Entire Sky | SDSS | Press Releases
    http://www.sdss.org/press-releases/sdss5/

    The next generation of the Sloan Digital Sky Survey (SDSS-V), directed by Juna Kollmeier of the Carnegie Institution for Science,
    will move forward with mapping the entire sky following a $16 million grant from the Alfred P. Sloan Foundation. The grant will
    kickstart a groundbreaking all-sky spectroscopic survey for a next wave of discovery, anticipated to start in 2020.

    The Sloan Digital Sky Survey has been one of the most-successful and influential surveys in the history of astronomy, creating
    the most-detailed three-dimensional maps of the universe ever made, with deep multi-color images of one third of the sky, and
    spectra for more than three million astronomical objects.

    “For more than 20 years, the Sloan Digital Sky Survey has defined excellence in astronomy,” says Paul L. Joskow, President of
    the Alfred P. Sloan Foundation. “SDSS-V continues that august tradition by combining cutting-edge research, international
    collaboration, technological innovation, and cost-effective grassroots governance. The Sloan Foundation is proud to be a core
    supporter of SDSS-V.”

    VIRGO
    VIRGO --- ---
    +4
    GW170608
    http://www.ligo.org/detections/GW170608.php

    On November 15, 2017, LIGO Scientific Collaboration announced the observation of another binary black hole coalescence.
    The gravitational waves were observed by the twin LIGO detectors on June 8, 2017. This is the lightest black hole binary
    observed so far, with component masses 12 and 7 times the mass of the sun.

    VIRGO
    VIRGO --- ---
    News | Our Living Planet Shapes the Search for Life Beyond Earth
    https://www.jpl.nasa.gov/news/news.php?feature=7000

    As a young scientist, Tony del Genio of NASA's Goddard Institute for Space Studies in New York City met Clyde Tombaugh, the discoverer of Pluto.

    Del Genio is now co-lead of a NASA interdisciplinary initiative to search for life on other worlds. This new position as the lead of this project
    may seem odd to those who know him professionally. Why? He has dedicated decades to studying Earth, not searching for life elsewhere.

    We know of only one living planet: our own. But we know it very well. As we move to the next stage in the search for alien life, the effort will
    require the expertise of planetary scientists, heliophysicists and astrophysicists. However, the knowledge and tools NASA has developed to study
    life on Earth will also be one of the greatest assets to the quest.

    How to Find a Living Planet
    https://www.youtube.com/watch?time_continue=43&v=mbjQB6Yqc-E
    VIRGO
    VIRGO --- ---
    ESA Science & Technology: How do you find a star cluster? Easy, simply count the stars
    http://sci.esa.int/gaia/59741-how-do-you-find-a-star-cluster-easy-simply-count-the-stars/

    It's the perfect meeting of old and new. Astronomers have combined the latest data from ESA's Gaia mission
    with a simple analysis technique from the 18th century to discover a massive star cluster that had previously
    escaped detection. Now, subsequent investigations are helping reveal the star-forming history of our Galaxy.

    Gaia scanning the sky
    https://www.youtube.com/watch?time_continue=1&v=IUk-fFEci0w


    Gaia: How to find a star cluster
    https://www.youtube.com/watch?time_continue=2&v=syOqZKSN3EA
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